surficial material geologic map of the creve coeur 7.5 ...€¦ · division of geology and land...
TRANSCRIPT
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SURFICIAL MATERIAL THICKNESS
Digital Elevation ModelFeet Meters
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High: 725
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Scale = 1:52,800Contour Interval = 20 ft.
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Data Point DistributionX Vs NA 2009 m/s! Missouri Geotechnical DGLS! Bedrock Borings DGLS
Scale = 1:52,800
DATA POINT LOCATION
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TOP OF BEDROCK
Digital Elevation ModelFeet Meters
High: 221
Low: 130
High: 725
Low: 427
Scale = 1:52,800
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Allen, W.H. and Ward, R.A., 1977, Soil, in The Resources of St. Charles County, Missouri, Land, Water, and Minerals; Satterfield, Ira and Harris, Barbara, eds.; Missouri Geological Survey, Department of Natural Resources, 237 p.Brill, K.G., 1991, Geologic Map of St. Louis City and County, Missouri; Division of Geology and Land Survey, Missouri Department of Natural Resources, OFM-91-0259, scale 1:62,500.Goodfield, A.G., 1965, Pleistocene and surficial geology of the City of St. Louis and the adjacent St. Louis County, Missouri; unpublished Ph.D. dissertation, University of Illinois, Urbana, IL, 206p., 6 pl.Harrison, R.W., 1997, Bedrock Geologic Map of the St. Louis 30' x 60' Quadrangle, Missouri and Illinois; U.S. Geological Survey, Miscellaneous Investigations Series Map I-2533, scale 1:100,000.Illinois State Geological Survey, 2007, Water and related wells in Illinois, ISGS map service: ILWATER 5/23/2007 <http://ablation.isgs.uiuc.edu/website/ilwater/viewer.htm>Missouri Department of Natural Resources, 2007, Well Logs, Wells Certified, Bedrock, Roads, IMOP, in Missouri Environmental Geology Atlas (MEGA); Division of Geology and Land Survey, Missouri Department of Natural Resources.Schrader, W.D., and Krusekoph, H.H., 1956, Soil survey of St. Charles County, Missouri; Soil Conservation Service, U.S. Department of Agriculture, 49 pages, 1 pl.Thompson, T. L., 1995, The stratigraphic succession in Missouri, v. 40 rev.; Division of Geology and Land Survey, Missouri Department of Natural Resources, 190 p.Williams, R.A., Odum, J.K., Stephenson, W.J., and Herrmann, R.B., 2007, Shallow P- and S-wave velocities in the St. Louis region, Missouri-Illinois: Earthquake Spectra, v. 23, no. 3, 711-726.
BIBLIOGRAPHY
Vertical Exageration = 20XHorizontal Scale = 1:24,000Roads and water bodies are not to scale Water Feature
Paleozoic BedrockPb Quaternary Terrace Lake DepositQtd
Inferred ContactQuaternary Silt-Capped AlluviumQslt Quaternary LoessQl
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Railroad
Interstate 270Railroad
Fee Fee Creek
Fee Fee Creek
WellWell
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WellHwy 180Hwy 67
WellColdwater Creek
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38°45'00"N
38°42'30"N
38°40'00"N
38°37'30"N
T 46 N
T 45 N
Produced by the Missouri Department of Natural Resources,Division of Geology and Land Survey, Geological Survey Program.Funded by the United States Geological Survey, National EarthquakeHazards Reduction Program, Award # G11AP20174, 2011.Topography was derived from a USGS 10 meter Digital Elevation Model using contouring software. Features were edited to the USGS,38090-F4-TF-024, 1993, Creve Coeur 7.5' quadrangle and digital aerialphotography from 2007 and 2009. Field checked in 2011.Universal Transverse Mercator (UTM), Zone 15.North American Datum 1983 (NAD 83).
Road and Contour Symbology
Contour Interval............. 10 Feet
Interstate Highways ...... §̈¦70
Missouri Highways ........ N
Light Duty Roads...........Railroad.........................Elevation Contour.......... 10Index Contour................ 50
SCALE 1:24,000Kilometers1 0 1 20.5
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Miles1 0 10.5
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Declination at Center of Sheet2011 Magnetic North Declination
~ 0° - 46' East, Field Strength: 53055.5 nT
^MNGN
1° 36’28 Mils 18 Mils
1°
MISSOURI
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LADUE
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The Creve Coeur quadrangle includes part of the large floodplain of the Missouri River and loess covered uplands. The floodplain is greater than two miles wide in this area. The quadrangle lies within the Dissected Till Plains Section of the Central Lowland Province of the Interior Plains Physiographic Division. The lowest recorded elevation is 425 feet mean sea level (msl) and occurs along the edge of the Missouri River at the northeast corner of the quadrangle. The highest elevation on the quadrangle occurs on the loess covered uplands and is greater than 720 feet msl near the eastern boundary of the quadrangle. Total relief on the Creve Coeur quadrangle is approximately 300 feet.
PHYSIOGRAPHY
The Creve Coeur quadrangle is underlain primarily by deposits of Paleozoic limestone and shale. The majority of the quadrangle is underlain by the Pennsylvanian-age Cherokee and Marmaton Groups which are cyclic Desmoinesian Series deposits of shale, limestone, sandstone, clay and coal. The upland area in the east of the Creve Coeur quadrangle contains the Pennsylvanian-age Pleasanton Group which are Missourian Series deposits of shale and sandstone. The Mississippian-age St. Louis, Salem and Warsaw Formations underly the southwest of the quadrangle and in areas where tributaries have incised the younger Pennsylvanian-age formations.
GEOLOGICAL OVERVIEW
DESCRIPTION OF MAP UNITS
ARTIFICIAL FILL – This unit comprises artificially emplaced fill material and is composed of a mixture of heterogeneous clay, silt, sand and gravel in various quantities. This unit may reach 40 feet in total thickness and comprises the material for highway and railroad beds and waste water treatment facility fill. This artificial fill has typically been placed on undisturbed materials.QUATERNARY SILT-CAPPED ALLUVIUM – This unit has been deposited by the Missouri River.The approximate upper 15 feet of these deposits are composed predominantly of clay with variableamounts of silt and organic material. The material residing below the clay is predominantly sand andgravel to the top of bedrock. The thickness of this unit ranges from approximately 60 feet where the floodplain transitions to uplands to more than 100 feet where the Missouri River has incised the Paleozoic bedrock. The water table is approximately five to 15 feet below ground surface, resulting in an interval of saturated sand and gravel more than 80 feet thick. This unit is included in the cross sections as Quaternary silt-capped alluvium.QUATERNARY LOESS – This unit is a wind-blown deposit of silt and clayey silt with occasional pockets of clay, sand and gravel. The unit is composed of two separate loess layers, the Roxana below and thePeoria above (Goodfield, 1965). The total thickness of the two units may reach 100 feet. The Roxana ishigher in clay content and may have a paleosol developed in the upper few feet. The contact between thetwo units forms a potential slide plane in areas of high topographic relief. The loess overlies Mississippian-age bedrock comprised of limestone and shale creating two unique environments. Where the loess is thin, the limestone may be karstic. Where the underlying unit is predominantly shale, water will perch, destabilizing the contact zone. Where the loess rests upon shale, the slide potential is increased. QUATERNARY TERRACE DEPOSIT – The terrace deposits in the quadrangle are slightly different thanpreviously mapped terrace deposits (Brill, 1991; Harrison, 1997; and Goodfield, 1965). All were deposited during fluvial events, leaving the terrace above low flow stage of the river. However, the terrace deposits in this quadrangle have a lacustrian signature of sensitive organic clays approximately 20 feet below the surface. After high stage flow returned to normal, low lying areas within the terrace were filled with organic clay material. This zone has a very low shear wave velocity and underlies many types of infrastructure.KARST – These areas have high concentrations of sinkholes, caves and other karstic features due to the solutional weathering of the Mississippian-age limestone underlying this area. These areas are typically found in the upland regions of the quadrangle.Line locates the placement of the cross section with end line symbols.Public Land Survey System including Spanish land grants.
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Permission must be obtained to visit privately owned land
SURFICIAL MATERIAL GEOLOGIC MAP OF THE CREVE COEUR 7.5' QUADRANGLEST. LOUIS COUNTY, MISSOURI
Geology and Digital Compilation byBradley A. Mitchell
2011OFM-11-598-GS
MISSOURI DEPARTMENT OF NATURAL RESOURCESDIVISION OF GEOLOGY AND LAND SURVEY
GEOLOGICAL SURVEY PROGRAMP.O. BOX 250, ROLLA MO 65402-0250
www.dnr.mo.gov/geology573-368-2100
THIS MAP WAS PRODUCED UNDER ACOOPERATIVE AGREEMENT WITH
THE UNITED STATES GEOLOGICAL SURVEY